ETH Price: $3,742.95 (+0.20%)
Gas: 3 Gwei

Token

 

Overview

Max Total Supply

0

Holders

0

Total Transfers

-

Market

Onchain Market Cap

$0.00

Circulating Supply Market Cap

-
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Contract Source Code Verified (Exact Match)

Contract Name:
WRLD_To_TOPIA_Migration

Compiler Version
v0.8.18+commit.87f61d96

Optimization Enabled:
Yes with 1000000 runs

Other Settings:
default evmVersion
File 1 of 4 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 2 of 4 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

File 3 of 4 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

File 4 of 4 : WRLD_To_TOPIA_Migration.sol
// SPDX-License-Identifier: MIT
//
// ...............   ...............   ...............  .....   ...............
// :==============.  ===============  :==============:  -====  .==============-
// :==============.  ===============  :==============:  -====  .==============-
// :==============.  ===============  :==============:  -====  .==============-
// :==============.  ===============  :==============:  -====  .==============-
// .::::-====-::::.  ===============  :====-:::::::::.  -====  .====-::::-====-
//      :====.       ===============  :====:            -====  .====:    .====-
//      :====.       ===============  :====:            -====  .====:    .====-
//
// Learn more at https://topia.gg or Twitter @TOPIAgg

pragma solidity 0.8.18;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contract WRLD_To_TOPIA_Migration is Ownable {
  IERC20 private immutable wrld1Token;
  IERC20 private immutable wrld2Token;
  IERC20 private immutable topiaToken;

  constructor(address wrld1TokenAddress, address wrld2TokenAddress, address topiaTokenAddress) {
    wrld1Token = IERC20(wrld1TokenAddress);
    wrld2Token = IERC20(wrld2TokenAddress);
    topiaToken = IERC20(topiaTokenAddress);
  }

  function swapWrld1ToTopia(uint256 amount) external {
    require(topiaToken.balanceOf(address(this)) >= amount, "Migration contract requires $TOPIA refill");
    wrld1Token.transferFrom(msg.sender, address(this), amount);
    topiaToken.transfer(msg.sender, amount);
  }

  function swapWrld2ToTopia(uint256 amount) external {
    uint256 swapAmount = amount * 952381 / 1000000; // reversion of the prior 5% wrld 1.0 -> 2.0 bonus.
    require(topiaToken.balanceOf(address(this)) >= swapAmount, "Migration contract requires $TOPIA refill");
    wrld2Token.transferFrom(msg.sender, address(this), amount);
    topiaToken.transfer(msg.sender, swapAmount);
  }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"wrld1TokenAddress","type":"address"},{"internalType":"address","name":"wrld2TokenAddress","type":"address"},{"internalType":"address","name":"topiaTokenAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"swapWrld1ToTopia","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"swapWrld2ToTopia","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Deployed Bytecode

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000d5d86fc8d5c0ea1ac1ac5dfab6e529c9967a45e9000000000000000000000000ff2d6934fb49e3e883dc03871d081a1c21ad7984000000000000000000000000ccccb68e1a848cbdb5b60a974e07aae143ed40c3

-----Decoded View---------------
Arg [0] : wrld1TokenAddress (address): 0xD5d86FC8d5C0Ea1aC1Ac5Dfab6E529c9967a45E9
Arg [1] : wrld2TokenAddress (address): 0xFF2d6934fb49e3e883Dc03871D081a1C21ad7984
Arg [2] : topiaTokenAddress (address): 0xcccCb68e1A848CBDB5b60a974E07aAE143ed40C3

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000d5d86fc8d5c0ea1ac1ac5dfab6e529c9967a45e9
Arg [1] : 000000000000000000000000ff2d6934fb49e3e883dc03871d081a1c21ad7984
Arg [2] : 000000000000000000000000ccccb68e1a848cbdb5b60a974e07aae143ed40c3


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